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Cheap flights from London Gatwick Airport to Washington, D.C. from $443

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Gatwick Airport to Washington, D.C. departing on 9/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from London Gatwick Airport to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
11:55 am - 6:30 pmLGW  London Gatwick-IAD Washington, D.C. Dulles Intl
11h 35m1 stop Reykjavik Keflavik Intl
Icelandair Logo
7:40 pm - 10:55 amIAD  Washington, D.C. Dulles Intl-LGW London Gatwick
10h 15m1 stop Reykjavik Keflavik Intl
$581Icelandair
Sat, Dec 26 - Thu, Jan 7
Icelandair Logo
11:55 am - 6:30 pmLGW  London Gatwick-IAD Washington, D.C. Dulles Intl
11h 35m1 stop Reykjavik Keflavik Intl
Icelandair Logo
7:40 pm - 10:55 amIAD  Washington, D.C. Dulles Intl-LGW London Gatwick
10h 15m1 stop Reykjavik Keflavik Intl
$581Icelandair
Sun, Dec 13 - Thu, Jan 7
SWISS Logo
9:25 am - 4:45 pmLGW  London Gatwick-IAD Washington, D.C. Dulles Intl
12h 20m1 stop Zurich
SWISS Logo
8:20 pm - 5:50 pmIAD  Washington, D.C. Dulles Intl-LGW London Gatwick
16h 30m1 stop Zurich
$582SWISS
Thu, Sep 10 - Thu, Oct 1
Icelandair Logo
1:00 pm - 7:20 pmLGW  London Gatwick-IAD Washington, D.C. Dulles Intl
11h 20m1 stop Reykjavik Keflavik Intl
Icelandair Logo
8:30 pm - 2:40 pmIAD  Washington, D.C. Dulles Intl-LGW London Gatwick
13h 10m1 stop Reykjavik Keflavik Intl
$582Icelandair
Thu, Aug 27 - Thu, Sep 10
Icelandair Logo
1:00 pm - 10:15 pmLGW  London Gatwick-IAD Washington, D.C. Dulles Intl
14h 15m1 stop Reykjavik Keflavik Intl
Icelandair Logo
8:30 pm - 2:40 pmIAD  Washington, D.C. Dulles Intl-LGW London Gatwick
13h 10m1 stop Reykjavik Keflavik Intl
$582Icelandair
Tue, Sep 1 - Mon, Sep 14
SWISS Logo
6:40 pm - 2:15 pmLGW  London Gatwick-IAD Washington, D.C. Dulles Intl
24h 35m2 stops Zurich Geneva Geneve-Cointrin
SWISS Logo
8:20 pm - 5:50 pmIAD  Washington, D.C. Dulles Intl-LGW London Gatwick
16h 30m1 stop Zurich
$583SWISS
Fri, Sep 4 - Mon, Sep 7
Virgin Atlantic Logo
10:25 am - 12:42 amLGW  London Gatwick-IAD Washington, D.C. Dulles Intl
19h 17m2 stops Paris Charles de Gaulle Atlanta Hartsfield-Jackson
Virgin Atlantic Logo
8:03 am - 9:40 amIAD  Washington, D.C. Dulles Intl-LGW London Gatwick
20h 37m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle
$583Virgin Atlantic
Wed, Oct 7 - Mon, Oct 12
Icelandair Logo
1:00 pm - 7:20 pmLGW  London Gatwick-IAD Washington, D.C. Dulles Intl
11h 20m1 stop Reykjavik Keflavik Intl
Icelandair Logo
8:30 pm - 2:40 pmIAD  Washington, D.C. Dulles Intl-LGW London Gatwick
13h 10m1 stop Reykjavik Keflavik Intl
$583Icelandair
Thu, Sep 3 - Sun, Sep 6
Icelandair Logo
3:40 pm - 10:15 pmLGW  London Gatwick-IAD Washington, D.C. Dulles Intl
11h 35m1 stop Reykjavik Keflavik Intl
Icelandair Logo
8:30 pm - 2:40 pmIAD  Washington, D.C. Dulles Intl-LGW London Gatwick
13h 10m1 stop Reykjavik Keflavik Intl
$583Icelandair
Fri, Sep 4 - Thu, Sep 10
Icelandair Logo
3:40 pm - 10:15 pmLGW  London Gatwick-IAD Washington, D.C. Dulles Intl
11h 35m1 stop Reykjavik Keflavik Intl
Icelandair Logo
8:30 pm - 11:45 amIAD  Washington, D.C. Dulles Intl-LGW London Gatwick
10h 15m1 stop Reykjavik Keflavik Intl
$583Icelandair
Wed, Sep 2 - Sat, Sep 5

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Air France flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

Our best Air France deals on London Gatwick Airport to Washington, D.C. Dulles Intl Airport flight tickets
Air France
Dec 21
LGW10:00 amLondon Gatwick
11h 30m
1 stop
IAD4:30 pmWashington, D.C. Dulles Intl
Jan 20
IAD6:40 pmWashington, D.C. Dulles Intl
16h 05m
1 stop
LGW3:45 pmLondon Gatwick
$611
Air France
Nov 5
LGW10:00 amLondon Gatwick
11h 30m
1 stop
IAD4:30 pmWashington, D.C. Dulles Intl
Nov 18
IAD9:30 pmWashington, D.C. Dulles Intl
13h 15m
1 stop
LGW3:45 pmLondon Gatwick
$614
Air France
Aug 24
LGW10:25 amLondon Gatwick
14h 10m
1 stop
IAD7:35 pmWashington, D.C. Dulles Intl
Aug 31
IAD12:29 pmWashington, D.C. Dulles Intl
16h 11m
2 stops
LGW9:40 amLondon Gatwick
$689

Icelandair flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

Our best Icelandair deals on London Gatwick Airport to Washington, D.C. Dulles Intl Airport flight tickets
Icelandair
Dec 13
LGW11:55 amLondon Gatwick
11h 35m
1 stop
IAD6:30 pmWashington, D.C. Dulles Intl
Jan 7
IAD7:40 pmWashington, D.C. Dulles Intl
10h 15m
1 stop
LGW10:55 amLondon Gatwick
$581
Icelandair
Aug 27
LGW1:00 pmLondon Gatwick
11h 20m
1 stop
IAD7:20 pmWashington, D.C. Dulles Intl
Sep 10
IAD8:30 pmWashington, D.C. Dulles Intl
13h 10m
1 stop
LGW2:40 pmLondon Gatwick
$582
Icelandair
Sep 4
LGW3:40 pmLondon Gatwick
11h 35m
1 stop
IAD10:15 pmWashington, D.C. Dulles Intl
Sep 10
IAD8:30 pmWashington, D.C. Dulles Intl
13h 10m
1 stop
LGW2:40 pmLondon Gatwick
$583

momondo Fare Finder

 
Customize your flight search to find flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 11, 2026.
Use the filters below to find and compare flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

LondonWashington, D.C.

LGW London Gatwick - IAD Washington, D.C. Dulles Intl

LGWIAD

London Gatwick

Sat 12/26

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Thu 1/7

7:40 pm-10:55 am

1 stop10h 15m

$581

LondonWashington, D.C.

LGW London Gatwick - IAD Washington, D.C. Dulles Intl

LGWIAD

London Gatwick

Sun 12/13

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Thu 1/7

7:40 pm-10:55 am

1 stop10h 15m

$581

LondonWashington, D.C.

LGW London Gatwick - IAD Washington, D.C. Dulles Intl

LGWIAD

London Gatwick

Thu 9/10

9:25 am-4:45 pm

1 stop12h 20m

Washington, D.C. Dulles Intl

Thu 10/1

8:20 pm-5:50 pm

1 stop16h 30m

$582

LondonWashington, D.C.

LGW London Gatwick - IAD Washington, D.C. Dulles Intl

LGWIAD

London Gatwick

Thu 8/27

1:00 pm-7:20 pm

1 stop11h 20m

Washington, D.C. Dulles Intl

Thu 9/10

8:30 pm-2:40 pm

1 stop13h 10m

$582

LondonWashington, D.C.

LGW London Gatwick - IAD Washington, D.C. Dulles Intl

LGWIAD

London Gatwick

Tue 9/1

1:00 pm-10:15 pm

1 stop14h 15m

Washington, D.C. Dulles Intl

Mon 9/14

8:30 pm-2:40 pm

1 stop13h 10m

$582

LondonWashington, D.C.

LGW London Gatwick - IAD Washington, D.C. Dulles Intl

LGWIAD

London Gatwick

Fri 9/4

6:40 pm-2:15 pm

2 stops24h 35m

Washington, D.C. Dulles Intl

Mon 9/7

8:20 pm-5:50 pm

1 stop16h 30m

$583

LondonWashington, D.C.

LGW London Gatwick - IAD Washington, D.C. Dulles Intl

LGWIAD

London Gatwick

Wed 10/7

10:25 am-12:42 am

2 stops19h 17m

Washington, D.C. Dulles Intl

Mon 10/12

8:03 am-9:40 am

2 stops20h 37m

$583

LondonWashington, D.C.

LGW London Gatwick - IAD Washington, D.C. Dulles Intl

LGWIAD

London Gatwick

Thu 9/3

1:00 pm-7:20 pm

1 stop11h 20m

Washington, D.C. Dulles Intl

Sun 9/6

8:30 pm-2:40 pm

1 stop13h 10m

$583

LondonWashington, D.C.

LGW London Gatwick - IAD Washington, D.C. Dulles Intl

LGWIAD

London Gatwick

Fri 9/4

3:40 pm-10:15 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Thu 9/10

8:30 pm-2:40 pm

1 stop13h 10m

$583

LondonWashington, D.C.

LGW London Gatwick - IAD Washington, D.C. Dulles Intl

LGWIAD

London Gatwick

Wed 9/2

3:40 pm-10:15 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Sat 9/5

8:30 pm-11:45 am

1 stop10h 15m

$583

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between London Gatwick Airport and Washington, D.C. Dulles Intl Airport?

Prices are currently typical for flights on this route.

Typical prices usually range from $566 to $657.
The lowest price recently found on this route was $581.

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

In general, June is the cheapest month to fly from London Gatwick Airport to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of June, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $0.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Thursday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $741. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from London Gatwick Airport to Washington, D.C. Dulles Intl Airport for around $862.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from London Gatwick Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as $784 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $805 on average. Flights to Washington, D.C. Dulles Intl Airport from London Gatwick Airport at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from London Gatwick Airport to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap London Gatwick Airport to Washington, D.C. Dulles Intl Airport (LGW to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

Fastest flight time

11h 20m

Direct flights

None
The fastest flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport takes 11h 20m
There are no direct flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from London Gatwick Airport to Washington, D.C. Dulles Intl Airport.
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Frequently asked questions about flying from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

  • How far is London Gatwick to Washington, D.C. Dulles Intl by plane?

    The distance between London Gatwick and Washington, D.C. Dulles Intl is about 3682.8 mi. A reasonable flight in good conditions will take 11h 20m.

  • When did momondo last update prices for flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?

    Prices for flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport are updated daily.

  • How old do you have to be to fly from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Gatwick Airport to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents required for your trip to Washington, D.C. Dulles Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Dulles Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Arlington
Gettysburg
Winchester
Waldorf
Laurel
Woodbridge
Fredericksburg
Gaithersburg
Linthicum Heights
Rockville
Silver Spring
Towson
Sterling
Colonial Beach
Springfield
Fairfax
Tysons
Edgewood

Why use momondo?

Why should I use momondo to find a flight deal from London to Washington, D.C.?

It is quick and easy to find London to Washington, D.C. flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Washington, D.C. that suits you.

Can I find flights from London to Washington, D.C. with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for London to Washington, D.C. flights to just show those with flexible booking policies.

How can momondo help me find flights from London to Washington, D.C.?

momondo helps you find the best flight between London and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from London to Washington, D.C. right now. Can momondo alert me if prices change?

Price alerts on flights to Washington, D.C. from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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